Owen made them up for his Covenants 101 and Covenants 102 threads over on X.
101
https://twitter.com/OwenKemeys/status/1741575353716326835?t=cgvZGJoMLv9P5DGPV5Sq3A&s=19
102
https://twitter.com/OwenKemeys/status/1744181234417140076?t=jnW9Wd89NwRT8StZ0SQqxA&s=19
102 covers the more advanced use-cases such as Cold Channels whereas just covers the basics such as Congestion Control. Let me know if these help